Tulentekokielto on voimassa.

It is a compound noun, which is very common in Finnish.

You can break it down like this:

• tulen = of fire (from tuli, fire)
• teko = making
• kielto = ban / prohibition

So the literal structure is something like fire-making ban.

In natural English, this usually means a ban on making fires or a fire ban.

Because Finnish usually writes compounds as one word.

The final part is the main word, and the earlier parts define it. Here:

• main word: kielto = ban
• what kind of ban? tulenteko- = fire-making

So Finnish prefers one compound word where English would often use several words, such as fire ban or ban on making fires.

This is extremely normal in Finnish, especially in official or practical language.

Because in this compound, the first part uses the genitive form of tuli:

• tuli = fire
• tulen = of fire

So tulenteko is literally the making of fire.

This pattern is common in Finnish compounds, although not every compound works exactly the same way. In this word, tulen- helps connect the idea clearly.

Also, learners sometimes notice that tulen can also mean I come / I will come from the verb tulla. That is a different word form entirely. In tulentekokielto, it is definitely the noun form meaning of fire.

on is the 3rd person singular of olla, so it means is.

voimassa is an idiomatic expression meaning:

• in force
• valid
• effective
• currently in effect

So on voimassa means is in force or is in effect.

This expression is especially common with:

• laws
• rules
• bans
• restrictions
• permits
• contracts

For example:

• Laki on voimassa. = The law is in force.
• Kielto on voimassa. = The ban is in effect.

The ending -ssa is usually the inessive case, often meaning in.

Here:

• voima = force / power
• voimassa = literally something like in force

So the phrase is built in a very Finnish way: a rule or ban is described as being in force.

Even though the case ending originally has a locational meaning, in this expression it functions idiomatically. You do not need to translate it word-for-word every time; just learn olla voimassa as a set expression meaning to be in force / to be valid.

No. Finnish has no articles like English a/an/the.

So:

• Tulentekokielto can mean a fire ban or the fire ban
• the exact meaning depends on context

In a sign or notice, English often uses the or no article at all depending on style, but Finnish does not need to mark that distinction.

This is the most neutral word order:

• Tulentekokielto = subject
• on = verb
• voimassa = complement

So it is a straightforward statement: The fire ban is in effect.

Finnish word order is more flexible than English, but the basic neutral order is very common, especially in official notices.

A different order is possible for emphasis, for example:

• Voimassa on tulentekokielto.

That sounds more like In effect is a fire ban or There is a fire ban in effect, with stronger focus on voimassa.

Yes, and that would be a very natural alternative.

• Tulenteko on kielletty. = Making fires is forbidden.

The difference is mostly in style:

• Tulentekokielto on voimassa. sounds more official/administrative
• Tulenteko on kielletty. sounds more direct and plain

Both are correct, but the original sentence is the kind of wording you might see in announcements, regulations, or public notices.

In real-life usage, tulentekokielto usually refers to a ban on making open fires outdoors, especially because of dry conditions or wildfire risk.

So although the word literally means fire-making ban, the practical meaning is usually closer to:

• open fire ban
• campfire ban
• fire ban

The exact scope depends on the rules, but in Finland this often appears in weather and forest-fire contexts.

A helpful syllable breakdown is:

tu-len-te-ko-kiel-to

A rough pronunciation guide for English speakers:

• tu like too, but shorter
• len with a clear e as in pen
• te with e as in pen
• ko with a pure o
• kiel begins with kie-, something like kee-eh
• to with a pure o

A few useful pronunciation points:

• Stress in Finnish is almost always on the first syllable: TUlentekokielto
• Each vowel is pronounced clearly
• Finnish spelling is very regular, so once you know the sounds, it is quite predictable

Yes, absolutely.

It has everything needed for a complete sentence:

• Tulentekokielto = subject
• on = verb
• voimassa = complement

Finnish often uses short, compact sentences, especially in notices and public information. A longer version could add time or place, for example:

• Tulentekokielto on voimassa koko maassa. = A fire ban is in effect across the whole country.
• Tulentekokielto on voimassa toistaiseksi. = The fire ban is in effect until further notice.

But the original sentence is already fully grammatical on its own.